LiDAR Mapping Data

LiDAR is a scanning system attached to the underside of a low-flying aircraft in order to pulse laser light at the surface of the Earth. This light is reflected back up to the system, where it is measured, creating a reliable reading of the 3D shape of the ground below.

The LiDAR data for part of Dublin comes in two maps. The areas can be viewed on this image here.

This mapping is Bare Earth filtered data, mapped by surveyors and omitting buildings and other topography. This provides bare ground topography, useful for getting an overview of the contours of an area, but not providing details of height of buildings.

Remote Sensing Data

UCD School of Geography has remote sensing images for Dublin purchased from BlueSky with the following specifications:

2015 Dublin LiDAR

This record serves as an index to a suite of high density, aerial remote sensing data for a 2km² area of Dublin, Ireland obtained at an average flying altitude of 300m. Collected in March 2015, the data include aerial laser scanning (ALS) from 41 flight paths in the form of a 3D point-cloud (LAZ) and 3D full waveform ALS (LAS and Pulsewave), and imagery data including ortho-rectified 2D rasters (RGBi) and oblique images.